
BRONKHORST®
Page 26 Operational instructions for digital multibus instruments 9.17.023
6 ALARM / STATUS PARAMETERS
6.1 GENERAL
Bronkhorst digital instruments have a build in alarm function. It is used to indicate several types of alarms:
• System errors
• System warnings
• Min/max alarms
• Response alarms
• Batch alarm
• Master slave alarms
The alarm can be read out using parameter alarm info. After an alarm a setpoint change can be set. This means the
setpoint will go to the set value after an alarm occurs. A delay can be set to prevent reaction to glitches in
measurement or power. How an alarm can be reset is controlled by the parameter “reset alarm enable”. It can bit-
wise be set to automatic, reset, external or keyboard/micro-switch. After the reset the alarm stays present during the
alarm delay time. In the functional schematic below the basic alarm function is explained.
6.2 FUNCTIONAL ALARM SCHEMATIC
setpoint 0…32000
Minimum alarm
limit 4800 = 15%
Maximum alarm
limit 25600 = 80%
Minimum alarm limit
= 1280 = 4%
Maximum alarm
limit = 960 = 3%
After Reset
alarm will still
be present
delay time“
&
be present
during
“Alarm
delay time“
before
activation
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